A & E Specifications

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Item no. AES-NLB60E - 02.12.2015
Overview and Functions
The network bridge and system controller shall provide an interface
between multiple power ampliers equipped with NomadLink
monitoring/control facilities and a host computer running associated
DeviceControl software. Communication between the network
bridge and system controller and the host computer shall be over an
Ethernet LAN using TCP/IP protocols. The IP address for the network
bridge and system controller and system controller shall be entered
manually from the front-panel or set remotely by a DHCP server.
Communication between the network bridge and system controller
and the power ampliers shall be over a daisy-chained subnet with
interconnections on Cat-5 cable using RJ45 connectors. The subnet
shall accommodate as many as 60 ampliers and as many as 480
amplier channels. The distance between the network bridge and
system controller and any amplier, or between any two ampliers,
shall be up to 300 m (980 ft.) and total length of the subnet cabling
shall be up to 700 m (2300 ft.) when the network forms a closed loop.
When the network is an open daisy-chain, total length shall be up to
400 m (1300 ft). The network bridge and system controller shall be
able to detect a closed loop network, and report an error if the loop
is broken. The network bridge and system controller shall provide
phantom power through the network, thereby maintaining a network
connection when ampliers are powered off or malfunctioning. Mute
on/off function for all channels in the subnet shall be accessible on
front-panel buttons. General faults as well as individual amplier
faults shall be indicated with a red Fault LED on the front-panel and
on the character display. The network bridge and system controller
shall offer three general purpose input (GPI) connections for external
control purposes; one GPI shall sense voltage (above or below
+10 VDC) while two GPIs shall sense contact closure. GPI’s shall
be user congurable to operate amplier subnet power on/off and
mute channels.
Connectors, Controls, and Indicators
The following connectors shall be provided on the rear-panel: one
EtherCon RJ45 for Ethernet; two EtherCon RJ45 for loop subnet
(NomadLink) In and Out; one 2-pole Phoenix input for voltage
sensing GPI; and two 2-pole Phoenix inputs for contact-closure
GPI. The following connector shall be provided on the front-
panel: one standard RJ45 Ethernet in parallel with the rear-panel
Ethernet connection.
The following controls shall be provided on the front-panel: six
navigation and parameter selection keys, and two momentary
switches to activate global power on or off for all power ampliers
connected to the subnet.
The following LED indicators shall be provided on the front-panel:
front-panel operation locked (yellow), fault warning (red), amplier
subnet muted (red); NomadLink (subnet) connected and active
(blue); Ethernet connected (orange), and Ethernet active (yellow).
A 2 x 16 character display with white text on blue background shall
display network status and parameters.
Power Supply
The network bridge and system controller shall have a universal
power supply with automatic selection of AC line sources from
100 V to 240 V at 50 Hz or 60 Hz. Power consumption shall be less
than 20 watts.
Physical
The network bridge and system controller shall be 483 mm (19 in.)
wide, 44 mm (1.75” or 1 U) high, and 208 mm (8.2 in.) deep. Weight
shall be 2.25 kg (5 lbs.). Housing shall be plated and painted steel
with an anodized aluminum front-panel.
The network bridge and system controller shall be approved for
use as specied by CE and CSA. The network bridge and system
controller shall be the Lab.gruppen NomadLink Bridge & System
Controller NLB 60E.
NLB 60E
Architect’s and Engineer’s Specifications
NomadLink Bridge & System Controller